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,~ ~~I ~I~~~~II~~I~~ ~I~ 999 5~ E X I B I T D MINING PLAN The area to be mined lies in the High Plains area of the Arkansas River Valley between the Smith Arroyo and the Apishapa River. The pit is located on a high terrace lying from 150 to 200 feet above the adjacent stream valleys and is generally underlain by gravelly alluvial materials deposited by these streams in ancient times. It is presently used as range pasture and will be reclaimed for that purpose after the gravel deposits have been removed. The deposits will be excavated to an average depth of 10 feet, processed on sight and used in road construction throughout Otero County. After these terraces are removed, slopes will be shaped whereby a gentle rolling tarrain will result. The existing overburden of these deposits are of such composition that it makes excellant binding material for the county's road base material. Top soil will therefore be hauled in from borrow pit cleaning and previously deposited blow dirt from adjacent county owned land to be used in the re- clamation process after the mining is completed. The subsurface stratum over which the gravel deposits are located is made up of consolidated and unconsolidated clay materials. The pit is currently being worked [o this depth. As can be seen from the drawing (Exibit C) the pit area is not large enough to accomodate a phased reclamation plan. This is due to the large area needed in the pit bottom for processing operations and the method in which the pit faces are worked simultaneously to derive a well sorted aggregate mixture. In view of these facts we plan to mine the terraces until the deposit is exhausted then reclaim the entire area at one time. At this time it is estimated the deposite will last until 1990 with the county's current demand from this pit. AUG 1 6 ly;g PAIRED lA1!(1 RECLAaggTinv Colo. De;,,. ~~ ;u;~turai rte5o _rCec